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122 lines
4.0 KiB
Python
122 lines
4.0 KiB
Python
from test_support import TestFailed, verbose
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import struct
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## import pdb
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def simple_err(func, *args):
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try:
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apply(func, args)
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except struct.error:
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pass
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else:
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raise TestFailed, "%s%s did not raise struct.error" % (
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func.__name__, args)
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## pdb.set_trace()
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simple_err(struct.calcsize, 'Q')
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sz = struct.calcsize('i')
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if sz * 3 <> struct.calcsize('iii'):
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raise TestFailed, 'inconsistent sizes'
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fmt = 'cbxxxxxxhhhhiillffd'
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fmt3 = '3c3b18x12h6i6l6f3d'
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sz = struct.calcsize(fmt)
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sz3 = struct.calcsize(fmt3)
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if sz * 3 <> sz3:
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raise TestFailed, 'inconsistent sizes (3*%s -> 3*%d = %d, %s -> %d)' % (
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`fmt`, sz, 3*sz, `fmt3`, sz3)
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simple_err(struct.pack, 'iii', 3)
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simple_err(struct.pack, 'i', 3, 3, 3)
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simple_err(struct.pack, 'i', 'foo')
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simple_err(struct.unpack, 'd', 'flap')
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s = struct.pack('ii', 1, 2)
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simple_err(struct.unpack, 'iii', s)
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simple_err(struct.unpack, 'i', s)
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c = 'a'
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b = 1
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h = 255
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i = 65535
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l = 65536
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f = 3.1415
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d = 3.1415
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for prefix in ('', '@', '<', '>', '=', '!'):
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for format in ('xcbhilfd', 'xcBHILfd'):
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format = prefix + format
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if verbose:
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print "trying:", format
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s = struct.pack(format, c, b, h, i, l, f, d)
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cp, bp, hp, ip, lp, fp, dp = struct.unpack(format, s)
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if (cp <> c or bp <> b or hp <> h or ip <> i or lp <> l or
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int(100 * fp) <> int(100 * f) or int(100 * dp) <> int(100 * d)):
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# ^^^ calculate only to two decimal places
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raise TestFailed, "unpack/pack not transitive (%s, %s)" % (
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str(format), str((cp, bp, hp, ip, lp, fp, dp)))
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# Test some of the new features in detail
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# (format, argument, big-endian result, little-endian result, asymmetric)
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tests = [
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('c', 'a', 'a', 'a', 0),
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('xc', 'a', '\0a', '\0a', 0),
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('cx', 'a', 'a\0', 'a\0', 0),
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('s', 'a', 'a', 'a', 0),
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('0s', 'helloworld', '', '', 1),
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('1s', 'helloworld', 'h', 'h', 1),
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('9s', 'helloworld', 'helloworl', 'helloworl', 1),
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('10s', 'helloworld', 'helloworld', 'helloworld', 0),
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('11s', 'helloworld', 'helloworld\0', 'helloworld\0', 1),
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('20s', 'helloworld', 'helloworld'+10*'\0', 'helloworld'+10*'\0', 1),
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('b', 7, '\7', '\7', 0),
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('b', -7, '\371', '\371', 0),
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('B', 7, '\7', '\7', 0),
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('B', 249, '\371', '\371', 0),
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('h', 700, '\002\274', '\274\002', 0),
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('h', -700, '\375D', 'D\375', 0),
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('H', 700, '\002\274', '\274\002', 0),
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('H', 0x10000-700, '\375D', 'D\375', 0),
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('i', 70000000, '\004,\035\200', '\200\035,\004', 0),
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('i', -70000000, '\373\323\342\200', '\200\342\323\373', 0),
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('I', 70000000L, '\004,\035\200', '\200\035,\004', 0),
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('I', 0x100000000L-70000000, '\373\323\342\200', '\200\342\323\373', 0),
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('l', 70000000, '\004,\035\200', '\200\035,\004', 0),
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('l', -70000000, '\373\323\342\200', '\200\342\323\373', 0),
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('L', 70000000L, '\004,\035\200', '\200\035,\004', 0),
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('L', 0x100000000L-70000000, '\373\323\342\200', '\200\342\323\373', 0),
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('f', 2.0, '@\000\000\000', '\000\000\000@', 0),
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('d', 2.0, '@\000\000\000\000\000\000\000',
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'\000\000\000\000\000\000\000@', 0),
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('f', -2.0, '\300\000\000\000', '\000\000\000\300', 0),
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('d', -2.0, '\300\000\000\000\000\000\000\000',
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'\000\000\000\000\000\000\000\300', 0),
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]
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def badpack(fmt, arg, got, exp):
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return
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def badunpack(fmt, arg, got, exp):
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return "unpack(%s, %s) -> (%s,) # expected (%s,)" % (
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`fmt`, `arg`, `got`, `exp`)
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isbigendian = struct.pack('=h', 1) == '\0\1'
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for fmt, arg, big, lil, asy in tests:
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if verbose:
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print `fmt`, `arg`, `big`, `lil`
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for (xfmt, exp) in [('>'+fmt, big), ('!'+fmt, big), ('<'+fmt, lil),
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('='+fmt, isbigendian and big or lil)]:
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res = struct.pack(xfmt, arg)
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if res != exp:
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raise TestFailed, "pack(%s, %s) -> %s # expected %s" % (
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`fmt`, `arg`, `res`, `exp`)
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n = struct.calcsize(xfmt)
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if n != len(res):
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raise TestFailed, "calcsize(%s) -> %d # expected %d" % (
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`xfmt`, n, len(res))
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rev = struct.unpack(xfmt, res)[0]
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if rev != arg and not asy:
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raise TestFailed, "unpack(%s, %s) -> (%s,) # expected (%s,)" % (
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`fmt`, `res`, `rev`, `arg`)
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